soundgen (version 1.7.0)

pitchSmoothPraat: Pitch smoothing as in Praat

Description

Smoothes an intonation (pitch) contour with a low-pass filter, as in Praat (http://www.fon.hum.uva.nl/praat/). Algorithm: interpolates missing values (unvoiced frames), performs FFT to obtain the spectrum, multiplies by a Gaussian filter, performs an inverse FFT, and fills the missing values back in.

Usage

pitchSmoothPraat(pitch, bandwidth, samplingRate, plot = FALSE)

Arguments

pitch

numeric vector of pitch values (NA = unvoiced)

bandwidth

the bandwidth of low-pass filter, Hz (high = less smoothing, close to zero = more smoothing)

samplingRate

the number of pitch values per second

plot

if TRUE, plots the original and smoothed pitch contours

See Also

analyze

Examples

# NOT RUN {
pitch = c(NA, NA, 405, 441, 459, 459, 460, 462, 462, 458, 458, 445, 458, 451,
444, 444, 430, 416, 409, 403, 403, 389, 375, NA, NA, NA, NA, NA, NA, NA, NA,
NA, 183, 677, 677, 846, 883, 886, 924, 938, 883, 946, 846, 911, 826, 826,
788, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, 307,
307, 368, 377, 383, 383, 383, 380, 377, 377, 377, 374, 374, 375, 375, 375,
375, 368, 371, 374, 375, 361, 375, 389, 375, 375, 375, 375, 375, 314, 169,
NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, 238, 285, 361, 374, 375, 375,
375, 375, 375, 389, 403, 389, 389, 375, 375, 389, 375, 348, 361, 375, 348,
348, 361, 348, 342, 361, 361, 361, 365, 365, 361, 966, 966, 966, 959, 959,
946, 1021, 1021, 1026, 1086, 1131, 1131, 1146, 1130, 1172, 1240, 1172, 1117,
1103, 1026, 1026, 966, 919, 946, 882, 832, NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA)
pitch_sm = pitchSmoothPraat(pitch, bandwidth = 2,
                            samplingRate = 39.57244, plot = TRUE)
# }